Tech Disco 4-23

Synopsis

After some moderate wet snowfall this morning, this week will be mainly damp and cool with a little spike of warmth late, but with a dominant trough aloft, clouds, wind, and showers will dictate the atmosphere for the upcoming week with no signs of change from this within the near future.

Short Term

A large trough at 500mb extending down into the Carolinas will be slow to exit as a weak longwave system works to push the trough off the coast. While this trough lingers, low pressure sitting off to our northeast will casually revolve around itself while deepening the surrounding pressure gradient from continuous PVA. From this low, the western counties will experience on and off rain showers with more snow mixed in at night and in the northern sectors with higher elevations. Thick, dense clouds will remain in place through Tuesday night, and with the low's positioning overnight tonight and Tuesday, moisture draw from the Great Lakes will assist in developing scattered precipitation  in the western counties tonight and throughout Tuesday afternoon. This low will begin to progress northward starting Tuesday night, allowing for a small surface ridge to clear the low and its associated clouds briefly Wednesday afternoon.

Long term

Wednesday afternoon, the massive trough will exit the region and will allow for small ridge in the longwave system to bring some clear conditions for the late afternoon throughout the evening. Thursday, a low pressure system will approach, allowing for WAA ahead of its cold front to warm the state to the near 70s regime before the front crosses sometime during the afternoon. This low will track to our north, and from a NAM perspective, the state will sit in the weakest part of the trough, bringing minmal rain to the state while the front passes on. The GFS, however, maintains the structure of the gradient and scatters precipitation throughout the state.  Strong dry flow behing this system along with a sharp ridge will move in Friday, bringing cold Canadian air into the Northeast to kick off the weekend.